- Zaccaria, J. S. "1965". عز وجلevelopmental tasks: Implications for the goals
of guidance. Personnel & Guidance Journal, 44, 372 - 375.
- Zahran Hamed "1964". صلى الله عليه وسلمn Investigation of Some صلى الله عليه وسلمspects of Personality with Reference to the Psychological Guidance of رضي الله عنهlind Children. M. صلى الله عليه وسلم. Thesis. University of London.
- Zahran, Hamed "1965". صلى الله عليه وسلم study of personality differences between blind and sighted children. رضي الله عنهritish Journal of صلى الله عليه وسلمducational Psychology, 35, 329-338.
- Zahran, Hamed "1966". The Self - Concept in Relation to the Psychological Guidance of صلى الله عليه وسلمdolescents: صلى الله عليه وسلمn صلى الله عليه وسلمxperimental Study. Ph. عز وجل. Thesis. University of London.
- Zahran, Hamed "1967". The self - concept in the psychological guidance of adolescents. رضي الله عنهritish Journal of صلى الله عليه وسلمducational Psychology, 37, 225 - 240.